## Xenon and Expanded Octets

Sydney Myers 4I
Posts: 100
Joined: Fri Aug 09, 2019 12:17 am

### Xenon and Expanded Octets

In 2C.9 and 2C.11, there are Lewis structures involving Xenon that have expanded electron shells, but the formal charge in the atom still appears to be zero, even though by all of the rules we have learned, it should be negative? Is there some kind of noble gas exception to the rule?

Jacey Yang 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

### Re: Xenon and Expanded Octets

The Xenon in the expanded lewis structures has a formal charge of 0 when you follow the equation FC = V - (L + S/2). It can't have a negative charge because it is a noble gas and its outer shell is full, so it can't attract more electrons.

AVerma_F19
Posts: 59
Joined: Thu Jul 25, 2019 12:15 am
Been upvoted: 1 time

### Re: Xenon and Expanded Octets

The FC charge equation gives a FC of 0 when you look at these structures. FC = # of valence e - (# of lone pair e + # of bonding/2)